/* Copyright (C) 2008  Romolo Camplani, Marco Fortunato, Marco Marelli, Guido Rota, Fabio A. Schreiber et al.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.dei.perla.parser.clauses;

/**
 * L'enumerazione delle possibili operazioni da eseguire quando una selezione non produce alcun record
 *
 */
public enum OnEmptySelectionOptions {

	/**
	 * Non generare nessun record
	 */
	INSERT_NOTHING,
	
	/**
	 * Genera un record con valori di default
	 */
	INSERT_DEFAULT;
	
	
	/**
	 * Ritorna una descrizione testuale dell'opzione 
	 */
	public String toString() {
		switch(this) {
			case INSERT_NOTHING:	return "INSERT NOTHING";
			case INSERT_DEFAULT:	return "INSERT DEFAULT";
			default:				return "";
		}
	}	
}
